html {
    scroll-behavior: smooth;
}

.snowflake {
    position: fixed;
    top: -10px;
    z-index: 9999;
    user-select: none;
    pointer-events: none;
    animation: fall linear infinite;
    opacity: 0.8;
}

@keyframes fall {
    to {
        transform: translateY(100vh);
    }
}

.scroll-icon {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Lightbox styles */
.lightbox {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    overflow: auto;
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-content {
    position: relative;
    max-width: 95%;
    max-height: 95%;
    margin: auto;
    animation: zoomIn 0.3s;
}

@keyframes zoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #fff;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.5);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s;
}

.lightbox-close:hover {
    background: rgba(0, 0, 0, 0.8);
}

.lightbox-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    display: block;
    margin: auto;
}

.clickable-image {
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.clickable-image:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* Mobile menu animation */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.3s ease-out, opacity 0.3s ease-out, visibility 0s 0.3s;
}

#mobile-menu.open {
    max-height: 500px;
    opacity: 1;
    visibility: visible;
    transition: max-height 0.4s ease-in, opacity 0.4s ease-in, visibility 0s 0s;
}

/* Scrolled nav padding - różne dla mobile i desktop */
#nav.scrolled {
    padding-top: 0.25rem;
    padding-bottom: 0.25rem;
}

@media (min-width: 768px) {
    #nav.scrolled {
        padding-top: 0.5rem;
    }
}